Question

Solve the equation below r+3=3(r-5)

Answer 1

Answer:

r = 9

Step-by-step explanation:

r + 3 =3 (r - 5)

1. remove brackets and simplify

r + 3 = 3r − 15

2. Subtract 3r from both sides

r + 3 −3r = 3r −15 −3r

−2r + 3 = −15

3. Subtract 3 from both sides.

−2r + 3 −3 = −15 −3

−2r = −18

4. Divide both sides by -2.

−2r = −18

___   ___

-2    =  -2

r = 9

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Answer 2

Answer:

r = 9

Step-by-step explanation:

Given

r + 3 = 3(r - 5) ← distribute

r + 3 = 3r - 15 ( subtract r from both sides )

3 = 2r - 15 ( add 15 to both sides )

18 = 2r ( divide both sides by 2 )

9 = r